* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.45 system-ui, sans-serif; color: #1d1d1f; background: #f3f5f8; }
header, main, footer { padding: 16px 24px; }
header { color: #f8fafc; background: #14243a; }
h1 { margin: 0; font-size: 24px; letter-spacing: .01em; text-transform: capitalize; }
.sub { margin: 2px 0 0; color: #bfccdc; }
main { min-height: 180px; }
.list { list-style: none; margin: 0; padding: 0; max-width: 1100px; }
.row { display: grid; grid-template-columns: 100px 64px minmax(180px, 1fr) 190px 112px; gap: 12px; align-items: center; min-height: 54px; padding: 8px 12px; border-bottom: 1px solid #e0e5ec; background: #fff; }
.row:first-child { border-radius: 8px 8px 0 0; }
.row:last-child { border-radius: 0 0 8px 8px; }
.row .id { font-family: ui-monospace, monospace; font-weight: 600; }
.row .sev { width: max-content; padding: 2px 8px; border-radius: 999px; background: #edf1f6; text-transform: uppercase; font-size: 11px; font-weight: 700; }
.row.sev1 .sev { color: #9d1734; background: #fde8ed; }
.row.sev2 .sev { color: #8a4b00; background: #fff1d6; }
.row .what { overflow-wrap: anywhere; }
.row time { color: #505d6c; font-variant-numeric: tabular-nums; white-space: nowrap; }
button { border: 0; border-radius: 6px; padding: 8px 14px; color: #fff; background: #245caa; font: inherit; font-weight: 650; cursor: pointer; }
button:hover { background: #174987; }
button:disabled { opacity: .6; cursor: wait; }
.acked { color: #17613a; font-weight: 650; }
.loader, .empty { color: #4c5969; }
.error { color: #9d1734; }
footer { color: #687586; font-size: 13px; }
@media (max-width: 760px) {
  header, main, footer { padding: 14px 16px; }
  .row { grid-template-columns: 1fr auto; gap: 6px 12px; padding: 12px; }
  .row .id, .row .sev, .row time { grid-row: 1; }
  .row .id { grid-column: 1; }
  .row .sev { grid-column: 2; justify-self: end; }
  .row .what { grid-column: 1 / -1; }
  .row time { grid-column: 1; font-size: 13px; }
  .row button, .row .acked { grid-column: 2; justify-self: end; }
}